Complaint against Instagram store heavenvillaethnics

I have ordered a dress of 1850/- INR from an Instagram store heavenvillaethnics through WhatsApp. They delivered me a product of different size and defective. I asked them for exchange and after so much of discussion they agreed. They sent me another dress which I selected from their online store but what they sent me is very different from the picture they showed. The colour is completely different from the picture and the product quality is very very cheap and downmarket. And now when I am trying to contact them they are not replying to my WhatsApp messages and their contact no. is not reachable.

sana khan
Gandhi Sagar 458771, Madhya Pradesh
Email: kxxxxxxxxxx5@gmail.com